lithoheterotrophic
METPO:1000648 · CLASS · REVIEWED
A trophic type in which an organism obtains energy from the oxidation of inorganic compounds while using organic compounds as the primary carbon source for biosynthesis.
Lithoheterotrophic inorganic energy and organic carbon use
Edge evidence
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lithoheterotrophic
uses electron donor
inorganic electron donor
METPO:2000009Lithoheterotrophy uses inorganic compounds as energy-generating electron donors.
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DOI:10.1016/B978-0-12-378630-2.00219-Xoxidize inorganic atoms or molecules
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ferrous iron
example of
inorganic electron donor
rdfs:subClassOfFe(II) is an example inorganic electron donor for lithotrophic growth.
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DOI:10.1038/s41598-021-81412-3Fe(II) as the energy source
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inorganic electron donor
feeds electrons into
respiratory chain
METPO:2007402Oxidation of inorganic donors feeds respiratory electron transport.
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DOI:10.1016/j.bbabio.2008.09.008membrane-bound electron transport chain
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respiratory chain
transfers electrons to
molecular oxygen
METPO:2007403Aerobic Fe(II)-oxidizing lithotrophy can reduce oxygen.
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DOI:10.1038/s41598-021-81412-3oxidation of Fe(II) coupled to the reduction of oxygen
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respiratory chain
produces
ATP
METPO:2000202Respiratory electron transport supports ATP synthesis.
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DOI:10.1016/j.bbabio.2008.09.008drives ATP synthesis
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lithoheterotrophic
uses carbon source
organic carbon
METPO:2000006Lithoheterotrophy uses organic compounds as carbon sources.
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DOI:10.1038/s41598-021-81412-3glucose as the sole carbon source
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glucose
example of
organic carbon
rdfs:subClassOfGlucose is an experimentally supported organic carbon source.
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DOI:10.1038/s41598-021-81412-3glucose as the sole carbon source
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organic carbon
converted to
precursor metabolites
Organic carbon supplies biosynthetic precursors.
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DOI:10.1038/s41598-021-81412-3biomass precursors provided by glucose
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precursor metabolites
incorporated into
biomass
biolink:part_ofOrganic-carbon precursors are incorporated into cellular material.
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DOI:10.1016/B978-012373944-5.00083-3incorporation of a compound into biomass
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microaerobic conditions
supports
Fe(II) oxidation
Microaerobic conditions support Fe(II)-oxidizing growth by limiting abiotic Fe(II) oxidation.
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DOI:10.1038/s41598-021-81412-3
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ferrous iron
oxidized in
Fe(II) oxidation
Ferrous iron is the substrate oxidized in the energy-yielding Fe(II) oxidation process.
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DOI:10.1038/s41598-021-81412-3
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Fe(II) oxidation
feeds electrons into
respiratory chain
METPO:2007402Fe(II) oxidation provides electrons for respiratory energy conservation.
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DOI:10.1038/s41598-021-81412-3
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sulfide
example of
inorganic electron donor
rdfs:subClassOfSulfide is an inorganic electron donor for lithotrophic sulfur oxidation.
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DOI:10.1038/s41467-025-56588-1
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sulfide:quinone oxidoreductase (SQR)
oxidizes
sulfide
METPO:2000016SQR catalyzes oxidation/detoxification of sulfide as a sulfide-oxidation module.
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DOI:10.1038/s41467-025-56588-1
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thiosulfate
example of
inorganic electron donor
rdfs:subClassOfThiosulfate is an inorganic sulfur electron donor for lithotrophic oxidation.
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DOI:10.1038/s41467-025-56588-1
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periplasmic Sox system
oxidizes
thiosulfate
METPO:2000016The periplasmic Sox system encodes oxidation of thiosulfate.
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DOI:10.1038/s41467-025-56588-1
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conductive pili and c-type cytochromes
enables
direct interspecies electron transfer
RO:0002327Conductive pili and outer-surface c-type cytochromes enable direct interspecies electron transfer.
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DOI:10.3390/life14050591
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Provenance
- Source
- METPO (2025-11-25)
- Author
- Jed Dongjin Kim-Ozaeta
- Definition source
- DOI:10.1038/s41598-021-81412-3
Parent traits (1)
Synonyms (1)
- lithoheterotroph
kg-microbe context
Matched 1 kg-microbe node via direct_metpo.
METPO:1000648[-0.997, -3.520, -5.312, -0.246, …]
Nearest neighbors in embedding space
- physiology trophic type 0.838
- physiology photolithoautotrophic 0.831
- physiology lithoautotrophic 0.829
- physiology hydrogenotrophic 0.827
- physiology carboxydotrophic 0.825
- physiology photoorganoheterotrophic 0.790
- physiology chemoautotrophic 0.783
- physiology mixotrophic 0.777
Curation history
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SEEDED_FROM_METPO · seed_from_metpo
imported from data/raw/metpo.owl (CLASS)
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ADDED_CAUSAL_GRAPH · codex
Added DOI-backed causal graph for inorganic electron donor oxidation, Fe(II), respiratory energy conservation, organic carbon use, and biomass formation.
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GROUND_CAUSAL_PREDICATES · claude
Grounded 3 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2000009×1, METPO:2000202×1, METPO:2000006×1).
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GROUND_CAUSAL_PREDICATES · claude
Grounded 2 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (rdfs:subClassOf×2).
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GROUND_CAUSAL_PREDICATES · claude
Grounded 2 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2007402×1, METPO:2007403×1).
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GROUND_CAUSAL_NODES · claude
Grounded 3 causal-node grounding field(s) via mappings/node_grounding.tsv (CHEBI:29033×1, CHEBI:50860×1, GO:0022904×1).
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GROUND_CAUSAL_NODES · claude
Grounded 2 causal-node grounding field(s) via mappings/node_grounding.tsv (METPO:1007502×1, METPO:1007501×1).
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RETYPE_CAUSAL_NODES · claude
Re-typed 1 causal-node node_type field(s) to align with CausalNodeTypeEnum semantics: biomass: BIOLOGICAL_PROCESS → CHEMICAL ×1.
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GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (biolink:part_of×1).
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ENRICH_CAUSAL_GRAPH · claude
Added 8 evidence-backed generic edges (8 new nodes) from the deep-research report.
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GROUND_CAUSAL_PREDICATES · claude
Grounded 6 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (rdfs:subClassOf×2, METPO:2000016×2, METPO:2007402×1, RO:0002327×1).
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GROUND_CAUSAL_NODES · claude
Grounded 2 causal-node grounding field(s) via mappings/node_grounding.tsv (CHEBI:15138×1, CHEBI:16094×1).